buildplan

type Metadata map[string]interface{}

type Plan struct {
	// Provided represents the dependencies provided by a buildpack. Optional.
	Provides []Provided `toml:"provides,omitempty"`

	// Required represents the dependencies required by a buildpack.  Optional.
	Requires []Required `toml:"requires,omitempty"`
}

type Plans struct {
	// Plan is the primary Plan.
	Plan

	// Or are additional Plans. Optional.
	Or []Plan `toml:"or,omitempty"`
}

type Provided struct {
	// Name represents the name of a dependency.
	Name string `toml:"name"`
}

type Required struct {
	// Name represents the name of a dependency.
	Name string `toml:"name"`

	// Version represents the version of a dependency.  Optional.
	Version string `toml:"version,omitempty"`

	// Metadata represents the metadata of a dependency.  Optional.
	Metadata Metadata `toml:"metadata,omitempty"`
}

type Writer func(plans Plans) error